BBC:

Egyptian troops have opened fire on supporters of ousted Egyptian President Mohammed Morsi marching in Cairo, killing three people.

The shooting came as crowds moved on the Republican Guard headquarters, where Mr Morsi is believed to be held.

Islamist supporters of the former president had taken to the streets to demand his reinstatement.

The army, which removed Mr Morsi in response to days of unrest, denied shooting live rounds at the crowd.

However the BBC's Jeremy Bowen at the scene says he saw soldiers fire on the protesters.

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